Sofa



FIG. 1 is a front elevational view of a sofa in accordance with thepresent design;

FIG. 2 is a top plan view of the sofa illustrated in FIG. 1;

FIG. 3 is a bottom plan view of the sofa illustrated in FIG. 1;

FIG. 4 is an exploded perspective view of the sofa illustrated in FIG.1;

FIG. 5 is a rear elevational view of the sofa illustrated in FIG. 1;and,

FIG. 6 is a side elevational view of the sofa illustrated in FIG. 1.

The broken lines in the figures show elements of the article that formno part of the claimed design.

CLAIM The ornamental design for a sofa, as shown and described.